EUVD-2026-55628
GHSA-hf9m-85m8-5qmr
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
PR:L for required customer account; S:C and UI:R because admin must view the payload, enabling cross-context session theft with low confidentiality and integrity impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
ReadyEcommerce before 4.5.2 contains a stored cross-site scripting (XSS) vulnerability that allows authenticated customers to inject malicious HTML payloads through the chat and support ticket messaging systems by exploiting unsanitized rendering via the v-html directive in Messages.vue, RightChatSidebar.vue, SupportTicketMessages.vue, and SupportTicketDetails.vue. Attackers can submit crafted message content that executes arbitrary JavaScript in the browser of any shop owner or administrator who views the message, enabling session cookie theft and account takeover.
AnalysisAI
Stored XSS in ReadyEcommerce before 4.5.2 allows authenticated customers to inject arbitrary JavaScript into chat and support ticket messages, which executes in the browsers of any shop owner or administrator who views the messages. The root cause is unsanitized rendering via Vue.js's v-html directive across four frontend components, bypassing the framework's built-in template escaping protections. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid customer account on the ReadyEcommerce platform - no elevated role is needed, but unauthenticated exploitation is not possible (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.1 with vector AV:N/AC:L/AT:N/PR:L/UI:P accurately reflects the attack profile: low-complexity network attack, low-privilege authentication (customer account), and passive user interaction (admin viewing a message). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A registered customer submits a support ticket containing a crafted payload such as an img tag with an onerror handler that exfiltrates document.cookie to an attacker-controlled server. When a shop owner or administrator opens the support ticket or chat thread in their browser, the payload silently executes, transmitting the admin's session cookie. … |
| Remediation | Upgrade ReadyEcommerce to version 4.5.2 or later, which addresses the unsafe v-html rendering in Messages.vue, RightChatSidebar.vue, SupportTicketMessages.vue, and SupportTicketDetails.vue. … Detailed patch versions, workarounds, and compensating controls in full report. |
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View allSame weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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